APA

Belev D. G. и. д., Белев Д. Г., Georgiev K. Y., Savov K. N. & Ivanchev I. A. (1986). Fundamentals of the consumer co-operative`s economy. Sofia: Higher Inst. of Economics Karl Marx.

Chicago

Belev Dimiter Georgiev и др, Белев Димитър Георгиев, Georgiev Kuzman Yanchov, Savov Kostadin Nikolov and Ivanchev Ivan Alexandrov. 1986. Fundamentals of the consumer co-operative`s economy. Sofia: Higher Inst. of Economics Karl Marx.

Harvard

Belev D. G. и. д., Белев Д. Г., Georgiev K. Y., Savov K. N. and Ivanchev I. A. (1986). Fundamentals of the consumer co-operative`s economy. Sofia: Higher Inst. of Economics Karl Marx.

MLA

Belev Dimiter Georgiev и др, Белев Димитър Георгиев, Georgiev Kuzman Yanchov, Savov Kostadin Nikolov and Ivanchev Ivan Alexandrov. Fundamentals of the consumer co-operative`s economy. Sofia: Higher Inst. of Economics Karl Marx. 1986.